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Control method for preventing pipe vibration and air conditioner

A control method and technology for air conditioners, applied in mechanical equipment and other directions, can solve problems such as air conditioner pipeline vibration, and achieve the effects of reducing system load, improving stability and safety, and reducing vibration

Active Publication Date: 2019-01-29
AUX AIR CONDITIONING LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose a control method for preventing pipeline vibration, so as to solve the serious problem of air conditioner pipeline vibration

Method used

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  • Control method for preventing pipe vibration and air conditioner
  • Control method for preventing pipe vibration and air conditioner
  • Control method for preventing pipe vibration and air conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] After the air conditioner has been running for a period of time, the indoor ambient temperature is close to the set temperature. At this time, the operating frequency of the air conditioner will decrease, and the compressor of the air conditioner will easily run near its own resonance point; , there will be very strong vibration, which will drive the pipeline system to vibrate strongly; in order to improve the stability of the air conditioner at low frequency operation, see figure 1 As shown, this embodiment provides a control method for preventing pipeline vibration, and the control method includes the following steps:

[0062] S1: Obtain the running time of the compressor;

[0063] S2: Judging whether the running time of the compressor is greater than the first preset running time, if it is determined that the running time of the compressor is greater than the first preset running time, go to step S3, otherwise go to step S1;

[0064] S3: Adjust the opening of the el...

Embodiment 2

[0073] On the basis of embodiment 1, see figure 2 As shown, in this embodiment, adjusting the opening of the electronic expansion valve to the set number of steps according to the operating frequency of the compressor and the system pressure includes:

[0074] S31: detecting the operating frequency of the compressor;

[0075] S32: Judging whether the operating frequency of the compressor is lower than the frequency setting threshold, if it is determined that the operating frequency of the compressor is lower than the frequency setting threshold, go to step S33, otherwise go to step S31;

[0076] S33: detecting system pressure;

[0077] S34: Judging whether the system pressure is lower than the pressure setting threshold, if it is judged that the system pressure is lower than the pressure setting threshold, go to step S35, otherwise go to step S33;

[0078] S35: Adjust the opening of the electronic expansion valve to the set number of steps.

[0079] After determining that ...

Embodiment 3

[0084] On the basis of embodiment 2, see image 3 As shown, in this embodiment, after the opening of the electronic expansion valve is adjusted, the operation of the solenoid valve is further controlled, wherein the operation of the solenoid valve is controlled including:

[0085] S41: Turn on the solenoid valve, and record the running time of the solenoid valve;

[0086] S42: Judging whether the operating time of the solenoid valve is greater than the second preset operating time, if it is determined that the operating time of the electromagnetic valve is greater than the second preset operating time, enter step S43, otherwise enter step S41;

[0087] S43: Close the solenoid valve.

[0088] The solenoid valve is set on the refrigerant return branch, because one end of the refrigerant return branch is connected to the pipeline between the electronic expansion valve and the indoor heat exchanger, and the other end is connected to the spray welding port on the air inlet side of...

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Abstract

The invention provides a control method for preventing pipe vibration and an air conditioner, and relates to the technical field of air conditioners. The control method for preventing pipe vibration comprises the following steps that the operating time of a compressor is obtained; whether or not the operating time of the compressor is greater than a first preset operating time is judged; the operating degree of an electronic expansion valve is adjusted to a set step number according to the operating frequency of the compressor and the system pressure; and operation of an electromagnetic valveis controlled. According to the control method for preventing pipe vibration, the operating time of the compressor is compared with the first preset operating time first to primarily judge the probability that the air conditioner enters into a low-frequency operating state; and when it is judged that the operating time of the compressor reaches the first preset operating time, the operating degreeof the electronic expansion valve is adjusted according to the operating frequency of the compressor and the system pressure, so that pipe vibration is reduced, pipe stress is reduced, and the operating stability and safety of the air conditioner are improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a control method for preventing pipeline vibration and an air conditioner. Background technique [0002] At present, during the operation of the air conditioner, after a period of low-frequency operation, it is easy to cause severe pipeline vibration, resulting in increased pipeline stress, and there is a hidden danger of pipeline vibration breakage. Contents of the invention [0003] In view of this, the present invention aims to propose a control method for preventing pipeline vibration, so as to solve the problem of severe pipeline vibration of an air conditioner. [0004] In order to achieve the above object, technical solution of the present invention is achieved in that way: [0005] A control method for preventing pipeline vibration, comprising the steps of: [0006] Obtain the running time of the compressor; [0007] judging whether the running time of the c...

Claims

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Application Information

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IPC IPC(8): F24F11/64F24F11/84
CPCF24F11/64F24F11/84
Inventor 陈红
Owner AUX AIR CONDITIONING LTD BY SHARE LTD